CN108296669B - Impact-resistant composite brazing filler metal cake with spiral framework and preparation method thereof - Google Patents
Impact-resistant composite brazing filler metal cake with spiral framework and preparation method thereof Download PDFInfo
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- CN108296669B CN108296669B CN201711471374.1A CN201711471374A CN108296669B CN 108296669 B CN108296669 B CN 108296669B CN 201711471374 A CN201711471374 A CN 201711471374A CN 108296669 B CN108296669 B CN 108296669B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3006—Ag as the principal constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
Abstract
The invention discloses an impact-resistant composite solder cake with a spiral framework and a preparation method thereof. The invention winds the narrow-band brazing filler metal and the narrow-band alloy together at intervals continuously, after the narrow-band brazing filler metal and the narrow-band alloy are mutually clamped into a disc shape, the narrow-band brazing filler metal and the narrow-band alloy are placed on a pressing plate and are placed in an annealing furnace for stress relief annealing, and then the plate is cleaned and dried to prepare the final finished product composite brazing filler metal cake. When the composite solder cake is brazed, the silver-copper-zinc solder reacts with part of the CuNi alloy to generate the CuNiAgZn alloy, the strength of a brazing seam is improved, a spiral copper-nickel alloy isolation strip is left after welding, the stress can be greatly slowly released, and the impact resistance of a hard alloy tool is greatly improved. Compared with the traditional sheet solder, the invention has the advantages that the specific surface area is increased, and the melting temperature is easier to reach under the same heat input condition.
Description
Technical Field
The invention belongs to the field of brazing materials, and particularly relates to an impact-resistant composite brazing filler metal cake with a spiral framework and a preparation method thereof.
Background
Cemented carbides are composite materials made from high hardness refractory metal compounds (such as WC, TiC, TaC, NbC, VC, TiN, etc.) and binder metals (Co, Ni, Mo, Fe, etc.) by powder metallurgy processes. The hard alloy has extremely high hardness, wear resistance and hot hardness, and is an important wear-resistant material in modern industry. The hard alloy is widely applied to industries such as metal cutting tools, mine excavation, coal mining cutting teeth, mine rock drilling, petroleum drilling, geological exploration tools, deep drawing, extrusion, stamping dies and the like. Because the hard alloy is relatively expensive and has poor plasticity and impact toughness, most of the hard alloy is applied in the form of small hard alloy inserts attached to the working parts of parts made of high-strength steel such as structural steel, tool steel and the like; and the high-strength steel is used for bearing impact load, high-price hard alloy is saved, and the manufacturing cost is reduced. The common methods for integrally joining hard alloy and steel include: brazing, mechanical clamping, stress-insert, and bonding. The brazing method is the most widely applied method for firmly connecting the hard alloy and the steel and is one of the most successful methods;
the sandwich composite brazing filler metal is a novel stress-relief brazing filler metal which is formed by aiming at high-grade precise hard alloy tools or large-area hard alloy brazing in recent years. The core part of the brazing filler metal consists of pure copper, copper-manganese alloy or copper-zinc alloy, and the silver-based brazing filler metal is coated outside the core part; the thickness of the brazing seam is increased by the unmelted high-plasticity copper alloy, the thermal stress generated by the mismatch of the thermal expansion coefficients of the hard alloy and the steel matrix in the brazing joint can be effectively relieved by the elastic-plastic deformation of the high-plasticity copper alloy in the brazing process, the residual stress is reduced, the bonding strength of the brazing seam is improved, and the crack tendency of the hard alloy is greatly reduced;
the prior art discloses a common sandwich composite brazing filler metal and a preparation method thereof, wherein the composite brazing filler metal is of a three-layer structure, two outer layers are made of silver brazing filler metal, and a core part is made of copper alloy; the preparation method of the composite solder comprises the steps of three-layer rolling and compositing, diffusion welding heat treatment between composite surfaces, and finally finish rolling to a finished product of 0.3 mm; however, the method has the disadvantages of complex forming process, multiple processes, diffusion welding heat treatment, large limitation of diffusion welding heat treatment equipment, low production efficiency and relatively high cost.
Disclosure of Invention
In order to solve the problems, the invention provides the impact-resistant composite brazing filler metal cake with the spiral framework and the preparation method thereof, and the composite brazing filler metal cake is simple in forming process, easy for batch production and low in cost.
The invention is realized by the following technical scheme:
the utility model provides a take compound solder cake that spiral skeleton shocks resistance, compound solder cake is plane double helix shape, is become by narrowband brazing filler metal and narrowband material interval winding, the raw materials of narrowband brazing filler metal are silver, copper, zinc, the raw materials of narrowband material is copper-nickel alloy, the parts by weight of each raw materials do respectively in the narrowband brazing filler metal: 44-46 parts of Ag, 24-26 parts of Zn and 28-32 parts of Cu.
Preferably, the raw material of the narrow-band brazing filler metal is further added with rare earth, and the weight part of the rare earth is 0.01-0.025.
Preferably, the cross sections of the narrow-band brazing filler metal and the narrow-band material are both trapezoidal.
Preferably, the cross sections of the narrow-band brazing filler metal and the narrow-band material are both drum-shaped.
Preferably, the cross sections of the narrow-band brazing filler metal and the narrow-band material are both provided with semicircular grooves at one end and drum-shaped at the other end.
Preferably, the gap between the narrow-band brazing filler metal and the narrow-band material is less than or equal to 0.1 mm.
Preferably, the thickness of the composite solder cake is 0.1-3 mm.
A preparation method of an impact-resistant composite solder cake with a spiral framework comprises the following steps:
step one, respectively preparing narrow-band brazing filler metal and narrow-band materials;
winding the narrow-band brazing filler metal and the narrow-band material prepared in the step one through a winding device, mutually clamping and connecting the narrow-band brazing filler metal and the narrow-band material into a disc shape, and finally cutting the disc shape to form a planar double-spiral semi-finished product composite brazing filler metal cake;
thirdly, placing the semi-finished composite brazing filler metal cake prepared in the second step on a flat plate, placing a pressing plate on the flat plate, and placing the flat plate in an annealing furnace for stress relief annealing;
and step four, taking out the obtained product from the annealing furnace, cleaning and drying the obtained product, and preparing the final finished product composite brazing filler metal cake.
Preferably, the preparation of the narrow-band solder and narrow-band material in the step one comprises the following steps:
(a) respectively weighing silver, copper, zinc and rare earth, uniformly mixing and stirring to obtain a mixed raw material, smelting the mixed raw material, casting into a mixed solder ingot, cutting off a riser, turning the mixed solder ingot to remove oxide skin, and obtaining the turned mixed solder ingot with the oxide skin removed for later use;
(b) placing the mixed solder ingot which is turned and removed of the oxide skin in the step (a) in a muffle furnace for preheating at the temperature of 460-480 ℃, placing the preheated mixed solder ingot which is turned and removed of the oxide skin in a die cylinder of extrusion equipment, extruding and rolling to obtain a rolled solder sheet, and pre-heating the system of the extrusion equipment to 470-490 ℃;
(c) cutting the brazing filler metal sheet rolled in the step (b), and cleaning and passivating to obtain a brazing filler metal narrow band;
(d) the narrow-band material was prepared in the same manner.
Preferably, in the second step the winding device includes line end mounting fixture, cylindrical mold, be located the coiling retaining ring of cylindrical mold both sides, pass through the clearance between coiling retaining ring and the cylindrical mold respectively with narrowband brazing filler metal and narrowband material, put into the axis seam that sets up on the cylindrical mold boss respectively after bending narrowband brazing filler metal and narrowband material's end, use the end of line end mounting fixture fixed narrowband brazing filler metal and narrowband material respectively, make cylindrical mold rotate through drive arrangement, make narrowband brazing filler metal and narrowband material interval winding on cylindrical mold, and mutual joint becomes the disc.
The invention has the beneficial effects that:
(1) the invention winds the narrow-band brazing filler metal and the narrow-band alloy together at intervals continuously and mutually clamps the narrow-band brazing filler metal and the narrow-band alloy into a disc shape, so that the composite brazing filler metal cake prepared by the invention has better rigidity and structural stability and is convenient to package and transport; the production process is simple, the mass production is easy, compared with the traditional flaky brazing filler metal, the specific surface area is increased, and the melting temperature can be reached more easily under the same heat input condition; meanwhile, the production efficiency is high, the cost is low, the use is convenient, and the like;
(2) the anti-impact composite brazing filler metal cake with the spiral framework is used for large-area hard alloy brazing, in the brazing process, the narrow-band brazing filler metal taking AgCuZn as a raw material is fused with a part of narrow-band material taking CuNi alloy as a raw material, and is diffused to a base metal, in-situ metallurgical reaction is realized, CuNiAgZn alloy is generated, the strength of a brazing seam is improved, an unreacted spiral copper-nickel alloy isolation strip is left after welding, stress can be greatly slowly released, hard alloy cracking is prevented under impact load, and the anti-impact performance of a hard alloy tool is greatly improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a composite braze cake of example 1 of the present invention;
FIG. 3 is a schematic cross-sectional view of a narrow band brazing filler metal of example 2 of the present invention;
FIG. 4 is a schematic cross-sectional view of a composite braze cake of example 3 of the invention;
reference numerals: 1. narrow band brazing filler metal, 2, narrow band material.
Detailed Description
The invention will be further illustrated with reference to specific examples:
example 1:
the utility model provides a take compound solder cake that spiral skeleton shocks resistance, compound solder cake is plane double helix shape, is formed by narrowband brazing filler metal 1 and 2 interval windings of narrowband material, the raw materials of narrowband brazing filler metal 1 are silver, copper, zinc, the raw materials of narrowband material 2 are the copper-nickel alloy, the parts by weight of each raw materials do not do in the narrowband brazing filler metal 1: 44 parts of Ag, 24 parts of Zn and 28 parts of Cu, and 0.01 part of rare earth is further added into the raw material of the narrow-band brazing filler metal 1.
A preparation method of an impact-resistant composite solder cake with a spiral framework comprises the following steps:
step one, respectively preparing a narrow band brazing filler metal 1 and a narrow band material 2, wherein the steps of preparing the narrow band brazing filler metal 1 and the narrow band material 2 are as follows:
(a) respectively weighing silver, copper, zinc and rare earth, mixing and stirring uniformly to obtain a mixed raw material, smelting the mixed raw material, adding the rare earth into the brazing filler metal in the smelting process of the alloy to reduce casting defects, improve the molding and machinable performance of extrusion, reduce harmful elements, save the using amount of noble metals, improve the welding performance and the surface performance of the material, mutually reduce the activity of the rare earth and most alloy elements, mutually increase the solubility, facilitate alloying and obviously improve the oxidation resistance, casting the smelted mixed raw material into a 50 x 100 mm cuboid BAg45Cu30Zn25 mixed brazing filler metal cast ingot, turning and cutting off a riser, and removing an oxide skin of the mixed brazing filler metal cast ingot to obtain a mixed brazing filler metal cast ingot with the oxide skin removed by turning for later use;
(b) placing the mixed solder cast ingot with the oxide scale removed in the turning mode in the step (a) into a muffle furnace for preheating at the preheating temperature of 460 ℃, placing the preheated mixed solder cast ingot with the oxide scale removed in the turning mode into a die cylinder of extrusion equipment, extruding the mixed solder cast ingot into solder sheets with the thickness of 8 multiplied by 100 mm, and rolling the solder sheets to the thickness of 2 multiplied by 100 mm to obtain rolled solder sheets, wherein the system of the extrusion equipment is preheated to 470 ℃;
(c) cutting the brazing filler metal sheet rolled in the step (b) into a trapezoid shape of 1.5 multiplied by 2 mm, and cleaning and passivating to obtain a brazing filler metal narrow band;
(d) a trapezoidal narrow-band material having a size of 1.5X 2 mm was prepared in the same manner using a CuNi19 alloy as a raw material.
Step two, winding the narrow-band brazing filler metal 1 and the narrow-band material 2 prepared in the step one through a winding device, wherein the winding device comprises a wire end fixing clamp, a cylindrical mold and winding retainer rings positioned on two sides of the cylindrical mold, the narrow-band brazing filler metal and the narrow-band material respectively pass through gaps between the winding retainer rings and the cylindrical mold, the ends of the narrow-band brazing filler metal and the narrow-band material are bent and then respectively placed into axial seams arranged on a boss of the cylindrical mold, the ends of the narrow-band brazing filler metal and the narrow-band material are respectively fixed through the wire end fixing clamp, a splicing body is formed on one side surface of the narrow-band brazing filler metal and one side surface of the narrow-band material, the cross section of the splicing body is a parallelogram, the cylindrical mold is rotated through a driving device, the narrow-band brazing filler metal and the narrow-band material are wound on the cylindrical mold at intervals, the gap between the narrow-band brazing filler metal 1 and the narrow-band material 2 is less than or equal to 0.1 mm;
thirdly, placing the semi-finished composite brazing filler metal cake prepared in the second step on a flat plate, placing a pressing plate on the flat plate, and placing the flat plate in an annealing furnace for stress relief annealing;
and step four, taking out the obtained product from the annealing furnace, cleaning and drying the obtained product to prepare a final finished product composite brazing filler metal cake, wherein the thickness of the composite brazing filler metal cake is 0.1 mm.
Example 2:
the utility model provides a take compound solder cake that spiral skeleton shocks resistance, compound solder cake is plane double helix shape, is formed by narrowband brazing filler metal 1 and 2 interval windings of narrowband material, the raw materials of narrowband brazing filler metal 1 are silver, copper, zinc, the raw materials of narrowband material 2 are the copper-nickel alloy, the parts by weight of each raw materials do not do in the narrowband brazing filler metal 1: 45 parts of Ag, 25 parts of Zn and 30 parts of Cu, wherein the raw material of the narrow-band brazing filler metal 1 is also added with rare earth, and the weight part of the rare earth is 0.02 part.
A preparation method of an impact-resistant composite solder cake with a spiral framework comprises the following steps:
step one, respectively preparing a narrow band brazing filler metal 1 and a narrow band material 2; the steps for preparing the narrow-band brazing filler metal 1 and the narrow-band material 2 are as follows:
(a) respectively weighing silver, copper, zinc and rare earth, uniformly mixing and stirring to obtain a mixed raw material, smelting the mixed raw material, casting into a 50 x 100 mm cuboid BAg45Cu30Zn25 mixed solder cast ingot, cutting off a riser, turning the mixed solder cast ingot to remove oxide skin, and obtaining the mixed solder cast ingot with the oxide skin removed by turning for later use;
(b) placing the mixed solder cast ingot with the oxide scale removed in the turning mode in the step (a) into a muffle furnace for preheating at the preheating temperature of 470 ℃, placing the preheated mixed solder cast ingot with the oxide scale removed in the turning mode into a die cylinder of extrusion equipment, extruding the mixed solder cast ingot into solder sheets with the thickness of 8 multiplied by 100 mm, and rolling the solder sheets to the thickness of 2 multiplied by 100 mm to obtain rolled solder sheets, wherein the system of the extrusion equipment is preheated to 480 ℃;
(c) cutting the brazing filler metal sheet rolled in the step (b) into a drum shape of 1.5 multiplied by 2 mm, and cleaning and passivating to obtain a brazing filler metal narrow band;
(d) a drum-shaped narrow-band material was prepared in the same manner.
Step two, winding the narrow-band brazing filler metal 1 and the narrow-band material 2 prepared in the step one through a winding device, wherein the winding device comprises a wire end fixing clamp, a cylindrical mold and winding check rings positioned on two sides of the cylindrical mold, the narrow-band brazing filler metal 1 and the narrow-band material 2 respectively pass through gaps between the winding check rings and the cylindrical mold, the ends of the narrow-band brazing filler metal and the narrow-band material are bent and then respectively placed into axial seams arranged on a boss of the cylindrical mold, the ends of the narrow-band brazing filler metal and the narrow-band material are respectively fixed through the wire end fixing clamp, the cylindrical mold is rotated through a driving device, the narrow-band brazing filler metal 1 and the narrow-band material 2 are wound on the cylindrical mold at intervals and clamped into a disc shape, and finally the disc shape is cut off to form a planar double-spiral semi-finished product composite brazing filler metal cake, and the gap;
thirdly, placing the semi-finished composite brazing filler metal cake prepared in the second step on a flat plate, placing a pressing plate on the flat plate, and placing the flat plate in an annealing furnace for stress relief annealing;
and step four, taking out the obtained product from the annealing furnace, cleaning and drying the obtained product to prepare a final finished product composite brazing filler metal cake, wherein the thickness of the composite brazing filler metal cake is 2 mm.
Example 3:
the utility model provides a take compound solder cake that spiral skeleton shocks resistance, the thickness of compound solder cake is 3mm, compound solder cake is plane double helix shape, is formed by narrowband brazing filler metal 1 and 2 interval windings of narrowband material, the clearance between narrowband brazing filler metal 1 and the narrowband material 2 is less than or equal to 0.1 mm, the raw materials of narrowband brazing filler metal 1 are silver, copper, zinc, the raw materials of narrowband material 2 are the copper-nickel alloy, the weight of each raw materials is respectively in narrowband brazing filler metal 1: 46 parts of Ag, 26 parts of Zn and 32 parts of Cu, wherein the narrowband solder 1 is further added with rare earth in the raw materials, and the weight part of the rare earth is 0.025 part.
A preparation method of an impact-resistant composite solder cake with a spiral framework comprises the following steps:
step one, respectively preparing a narrow band brazing filler metal 1 and a narrow band material 2, wherein the steps of preparing the narrow band brazing filler metal 1 and the narrow band material 2 are as follows:
(a) respectively weighing silver, copper, zinc and rare earth, uniformly mixing and stirring to obtain a mixed raw material, smelting the mixed raw material, casting into a 50 x 100 mm cuboid BAg45Cu30Zn25 solder cast ingot, cutting off a riser, turning the mixed solder cast ingot to remove oxide skin, and obtaining the mixed solder cast ingot with the oxide skin removed by turning for later use;
(b) placing the mixed solder cast ingot with the oxide scale removed by turning in the step (a) in a muffle furnace for preheating at 480 ℃, placing the preheated mixed solder cast ingot with the oxide scale removed by turning in a die cylinder of extrusion equipment, extruding the mixed solder cast ingot into solder sheets with the thickness of 8 multiplied by 100 mm, and rolling the solder sheets to the thickness of 2 multiplied by 100 mm to obtain rolled solder sheets, wherein the system of the extrusion equipment is preheated to 490 ℃;
(c) cutting the brazing filler metal sheet rolled in the step (b) into a semi-circular groove with one end of 1.5 multiplied by 2 mm and a drum-shaped shape with the other end, and cleaning and passivating to obtain a brazing filler metal narrow band;
(d) preparing the narrow band material with the same shape by the same method;
step two, winding the narrow-band brazing filler metal 1 and the narrow-band material 2 prepared in the step one through a winding device, the winding device comprises a wire end fixing clamp, a cylindrical mold and winding check rings positioned on two sides of the cylindrical mold, narrow band brazing filler metal 1 and narrow band material 2 respectively pass through a gap between the winding check ring and the cylindrical mold, the ends of the narrow band brazing filler metal and the narrow band material are bent and then respectively placed into axial seams arranged on a boss of the cylindrical mold, the ends of the narrow band brazing filler metal and the narrow band material are respectively fixed by the wire end fixing clamp, the cylindrical die is rotated by the driving device, one side of the narrow band material with drum shape is inserted into one side of the narrow band brazing filler metal with a semicircular groove to form a splicing body during winding, so that the narrow band brazing filler metal 1 and the narrow band material 2 are wound on the cylindrical die at intervals, and are mutually clamped into a disc shape, and are finally cut off to form a semi-finished composite brazing filler metal cake with a plane double helix shape;
thirdly, placing the semi-finished composite brazing filler metal cake prepared in the second step on a flat plate, placing a pressing plate on the flat plate, and placing the flat plate in an annealing furnace for stress relief annealing;
and step four, taking out the obtained product from the annealing furnace, cleaning and drying the obtained product, and preparing the final finished product composite brazing filler metal cake.
While there have been shown and described what are at present considered the fundamental principles of the invention, its essential features and advantages, it will be understood by those skilled in the art that the invention is not limited by the embodiments described above, which are merely illustrative of the principles of the invention, but various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.
Claims (9)
1. The utility model provides a take compound brazing filler metal cake that spiral skeleton shocks resistance which characterized in that: the composite brazing filler metal cake is in a plane double-spiral shape and is formed by winding a narrow band brazing filler metal (1) and a narrow band material (2) at intervals, the raw materials of the narrow band brazing filler metal (1) are silver, copper and zinc, the raw material of the narrow band material (2) is a copper-nickel alloy, and the composite brazing filler metal (1) comprises the following raw materials in parts by weight: 44-46 parts of Ag, 24-26 parts of Zn and 28-32 parts of Cu, wherein rare earth is further added into the raw materials of the narrow-band brazing filler metal (1), and the weight part of the rare earth is 0.01-0.025 parts.
2. The impact-resistant composite solder cake with the spiral skeleton as claimed in claim 1, wherein: the cross sections of the narrow-band brazing filler metal (1) and the narrow-band material (2) are both trapezoidal.
3. The impact-resistant composite solder cake with the spiral skeleton as claimed in claim 1, wherein: the cross sections of the narrow band brazing filler metal (1) and the narrow band material (2) are both drum-shaped.
4. The impact-resistant composite solder cake with the spiral skeleton as claimed in claim 1, wherein: the cross sections of the narrow band brazing filler metal (1) and the narrow band material (2) are both provided with semicircular grooves at one ends and drum-shaped at the other ends.
5. The impact-resistant composite solder cake with the spiral skeleton as claimed in claim 1, wherein: the gap between the narrow band brazing filler metal (1) and the narrow band material (2) is less than or equal to 0.1 mm.
6. The impact-resistant composite solder cake with the spiral skeleton as claimed in claim 1, wherein: the thickness of the composite solder cake is 0.1-3 mm.
7. The preparation method of the impact-resistant composite solder cake with the spiral framework, according to claim 1, is characterized in that: the method comprises the following steps:
step one, respectively preparing a narrow band brazing filler metal (1) and a narrow band material (2);
winding the narrow-band brazing filler metal (1) and the narrow-band material (2) prepared in the step one through a winding device, mutually clamping and connecting the narrow-band brazing filler metal and the narrow-band material into a disc shape, and finally cutting the disc shape to form a semi-finished composite brazing filler metal cake in a planar double-spiral shape;
thirdly, placing the semi-finished composite brazing filler metal cake prepared in the second step on a flat plate, placing a pressing plate on the flat plate, and placing the flat plate in an annealing furnace for stress relief annealing;
and step four, taking out the obtained product from the annealing furnace, cleaning and drying the obtained product, and preparing the final finished product composite brazing filler metal cake.
8. The preparation method of the impact-resistant composite solder cake with the spiral framework, according to claim 7, is characterized in that: the preparation of the narrow-band brazing filler metal (1) and the narrow-band material (2) in the first step comprises the following steps:
(a) respectively weighing silver, copper, zinc and rare earth, uniformly mixing and stirring to obtain a mixed raw material, smelting the mixed raw material, casting into a mixed solder ingot, cutting off a riser, turning the mixed solder ingot to remove oxide skin, and obtaining the turned mixed solder ingot with the oxide skin removed for later use;
(b) placing the mixed solder ingot which is turned and removed of the oxide skin in the step (a) in a muffle furnace for preheating at the temperature of 460-480 ℃, placing the preheated mixed solder ingot which is turned and removed of the oxide skin in a die cylinder of extrusion equipment, extruding and rolling to obtain a rolled solder sheet, and pre-heating the system of the extrusion equipment to 470-490 ℃;
(c) cutting the brazing filler metal sheet rolled in the step (b), and cleaning and passivating to obtain the narrow-band brazing filler metal;
(d) and preparing the narrow-band material by the same method.
9. The preparation method of the impact-resistant composite solder cake with the spiral framework, according to claim 7, is characterized in that: and in the second step, the winding device comprises a wire end fixing clamp, a cylindrical mold and winding check rings positioned on two sides of the cylindrical mold, the narrow-band brazing filler metal (1) and the narrow-band material (2) respectively pass through gaps between the winding check rings and the cylindrical mold, the ends of the narrow-band brazing filler metal and the narrow-band material are bent and then respectively placed into axial seams arranged on a boss of the cylindrical mold, the ends of the narrow-band brazing filler metal and the narrow-band material are respectively fixed by the wire end fixing clamp, the cylindrical mold is rotated through a driving device, the narrow-band brazing filler metal (1) and the narrow-band material (2) are wound on the cylindrical mold at intervals and are clamped into a disc shape.
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| CN101870046A (en) * | 2010-06-03 | 2010-10-27 | 辽宁工程技术大学 | Impact-resistant and high-wear-resistant surfacing alloy material |
| CN205999483U (en) * | 2016-08-30 | 2017-03-08 | 郑州机械研究所 | A kind of Surface hardened layer pricker applies material |
| CN206615860U (en) * | 2017-04-05 | 2017-11-07 | 惠州市永力实业有限公司 | A kind of automatic coil winding machine |
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